diff --git a/lib/libfdt/fdt_ro.c b/lib/libfdt/fdt_ro.c
index fc08981..1be9538 100644
--- a/lib/libfdt/fdt_ro.c
+++ b/lib/libfdt/fdt_ro.c
@@ -576,7 +576,7 @@
 
 	list = fdt_getprop(fdt, nodeoffset, property, &length);
 	if (!list)
-		return -length;
+		return length;
 
 	len = strlen(string) + 1;
 	end = list + length;